858080 has 48 divisors (see below), whose sum is σ = 2104704. Its totient is φ = 330240.

The previous prime is 858073. The next prime is 858083. The reversal of 858080 is 80858.

858080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4874 + ... + 5046.

It is an arithmetic number, because the mean of its divisors is an integer number (43848).

2⁸⁵⁸⁰⁸⁰ is an apocalyptic number.

858080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052352).

858080 is an abundant number, since it is smaller than the sum of its proper divisors (1246624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

858080 is a wasteful number, since it uses less digits than its factorization.

858080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 858080 is about 926.3260764979. The cubic root of 858080 is about 95.0260316474.

The spelling of 858080 in words is "eight hundred fifty-eight thousand, eighty".